starting a non profit foundation The determination of this ratio mainly depends on the supply and demand relationship between the two sides and the competition. In general, the interest rate falls when the supply exceeds demand. Interest rates rise when demand exceeds supply. In addition, law, habit and so on also have a larger role. Marx's theory is of guiding significance to explain the question of interest rate decision under socialized production. "Conceptual framework" published by the financial accounting standards board Canning's view Not only can consumers have more choices in the price, variety and service of commodities, but also make it better for enterprises to purchase production factors and sales products.